Blow-testing machine.



PATENTED SEPT. 29, 1903.

M. B. MILLS. BLOW TESTING MACHINE.

APPLIOATION- FILED APR. 27, 1903.

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No. 740,161. PATENTED SEPT. 29, 1903 M. B. MILLS. BLOW TESTING MACHINE.

APPLICATION FILED APR. 27, 1903. 7 N0 MODEL. I 4 SHEETS-SHEET 2.

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v PATENTED SEPT. 29, 1903 M. B. MILLS. BLOW TESTING MACHINE.

APPLIQATION FILE-D APR. 27. 1903.

NO MODEL.

4 SHEETS-SHEET 3.

No. 740,161; PATENTBD SEPT; 29, 1903.

M. B. MILLS. BLOW TESTING MACHINE.

uruonlon FILED APR 27. 1903.

4 SHBBTSSHEET 4.

k NW l W N 3 {19M J3 n iii i ii I 2 WEE J? \J I K ll' l X1; MI f 1." *Z5 sex \C, J f5 j 6 1 W l1]! Album UNITED STATES i atented September 29,1903;

PATENT OF ICE.

MORTIMER l3. MILLS, OF CHICAGO, ILLINOIS, ASSIGNOR TO HERBERT S.

MILLS, OF CHICAGO, ILLINOIS.

BLOW-TESTING MACHINE.

SPECIFICATION forming part of Letters Patent No.;740,161, datedSeptember 29,1903.

Application filed. April 27. 1.903.

Serial No. 154,470. (No man.)

To all whom it 77mg concern:

Be it known that I','llIORTIMER l3. MILLS, a citizen of the UnitedStates, residing at Ohicago, in the countyof Cook and State ofIllinois,have invented a newand useful Improvement in Blow-TestingMachines, of which the following is a specification.v

My invention relates particularly to machines for testing fist-blows,although the invention may be usefully applied to other similarpurposes.

My primary object is to provide a machine of simple construction andimproved operation, particular attention being paid to securing amachine which will register accurately theforce of a sharp blow, butwhich will be affected very little by a shoving blow. In other words,the machine is designed to reg.- ister the eifective forces of blows,giving a tru 29 test of the power of the blows.

The invention is illustrated in theaccompanying drawings, in which V cFigure 1 represents a front view of my improved blowtesting machine;Fig. '2, a side 2 5 view of the upper portion of the same; Fig; 3, a topplan view of the same; Fig. i, an inner view of the casing, the rearplate being removed-and the mechanism shown in the po-.

sition which it occupies preparatory tothe o striking of a blow; Fig. 5,a similar, view showing the parts of the mechanism in the position whichthey occupy after ablow has been struck, the main portion of theratchetwheel being broken away and the outline,

thereof indicated by dotted lines; Fig.6, a

broken vertical sectional view taken as indicated at line 6 of Fig. 4,and Fig. 7a view taken as indicated at line 7 of Fig; 5.

A description of the preferred construction 40 is as follows:Arepresents a suitable stand or frame having its upper portion providedwith vertical frame members A; AZ-bracketarms secured to a wall andconnected with the upper ends of the members A; B, a ca'sing connectedat its upper end by pivots a with the upper ends of the frame members AB, a curved bracket or yoke having its ends connected with the membersA; B a spring confined between the rear lower portion of the casing andthe bracket B; C, an air-chamber comprising an elbow having a freeupwardly-turned end and a forwardlyturned'end rigidly connected with thecasingfront; ,(l, a blow-receiving head or cushion; G a diaphragmconnected with the inner upturned end of the elbow forming the chamber0; D, a ratchet-wheel or inertia-carried rotary member having a shaft Djournaled in the casing-front and in a suitable bearing 1), supportedfrom the casing; D an indicator-hand carried by the shaft D'and .movingover a dial D3; E, a diaphragm actuated bar or member serving toactuatethe wheel D; E, a dog serving to lock the member E in itselevated position; F, a stationary stop for the ratchet-wheel, withwhich engages a stud 0, carried by the ratchet-wheel; G, a pawl engagingthe ratchet-wheel; H, a bell-crank lever supported on a pivot d :andserving to release thelpawl G,-said bell-crank lever be 'ing preferablycoinoactuated; H, a latch provided with a shoulder (Z for engaging astud d? with which the lower end of the lever H is provided; H adiaphragmactuated arm supported on a pivot d and serving to release thelatch H, and I a spring connected at one end with the casing and at itsother end with a cable I-, wrapped upon and firmly secured to the shaftD. Y V

The frame ofthe machine may be of any suitable construction. and design,as also may bethecasing. The elbow forming the airchamber 0 preferablyis provided at its upturned end with afiange f, with which the diaphragmC is connected, and at its forwardlyturned end with a larger flangef",which is firmly connected with the casing; The elbow extends through anopening in the lower portion ofthe; casing-front, as clearly shown inFig.5. Connected with the: annular flange or plate f is a ring f whichmay be of wood. Attached to the ring f is a pad, which may comprise asheet of rubber f sheets of felt f, a packing of hair'f and a cover ofleather f, the whole being securely fastened to the ring f by a ferrulef". The construction provides an air-space f in free communication withthe air-chamber C, and hence with the under side of the diaphragm C Theratchetwheel D has in addition to the stud e a stud g, through themedium of which the wheel is actuated, and a stud g which serves to en-.

gage an arm g on a dog E and release the same when the ratchet-wheelreturns to the zero position. The stud g is in the path of a stud g withwhich the memberE is provided. The member E is further provided with ashoulder g, with which the dog E engages in the elevated position of themember E. The dog E is held in the locking position by a spring h,connected therewith and with a stationary stud h. The spring tendsnormally to hold the pawl G in engagement with the teeth of theratchet-wheel, said pawl being provided with a tooth 7t" for engagingsaid teeth. The bar E is provided'at its lower end with a flat head Z,which bears upon the diaphragm O and the arm H has a downturned endequipped with a head l,which bears upon the diaphragm. The lever 11 maybe actuated in any suitable manner to release the pawl G. Preferably itis provided at its lower end with a cam m, which enters a slot m at thelower end of a coin-chute J, which communicates with the externalsurface of the casing-front by means of a coin-slot J.

The operation of the machine will readily be understood from theforegoing detailed description. Assuming the machine to be in aconditionof rest with the pointer D at zero and the bar E and arm II resting uponthe diaphragm, a sharp blow upon the head 0 will cause a movement of thediaphragm C throw the bar E and arm H upwardly, unlock the bell cranklever II, and cause the stud g to strike the stud g of the ratchetwheel,thereby imparting rotation to the ratchet-wheel. The pawl G locks theratchetwheel in the position to which it is carried by the inertia whichit acquires under the force of the blow imparted to it. As theratchetwheel rotates away from its position of rest the pin g is carriedaway from the projection g of the dog E, permitting the dog to operateto lock the bar E in its elevated position. WVhen it is desired tooperate the machine again, it is necessary to drop a coin into thecoinchute, thereby actuating the lever II and elevating the pawl G. Thispermits the ratchet-wheel to return to its former 'position, duringwhich movement the pin g releases the dog E, permitting the bar Eto falland rest again upon the diaphragm. Vhen the lever I-Iis actuated by thecoin, the latch II engages the stud (Z of the lever, thereby causing thepawl G to be held in its elevated position. v\Vhen another blow isstruck, the bar E and arm H are again thrown upwardly simultaneously,the latch His released, and the Wheel D rotated. The lever H being leftfree by its release from the latch H, permits the pawl G to engage theratchet-wheel again, thereby preventing retraction of the ratchetwheeluntil a further coin is introduced.

It is noteworthy that the member E serves to impart a sharp'blow to therotary member D, the stud g having contact during a brief period of timeonly with the stud g, after a pushing blow, the diaphragm O is preferably provided with a small perforation p, which is insufficient in sizeto permit much of the air to escape when a sharp blow is struck,

while the air may escape in large quantity when a slow blow is struck.

It readily will be understood that the gist of the invention lies in theprovision for utilizing the air as a transmission medium under thestress of a sharp blow, while under the stress of a slow blow the airserves as a poor transmission medium.

It will be understood that changes in details of construction within thespirit of my invention readily may be made by those skilled in the art.Hence no undue limitation should be understood from the foregoingdetailed description,the same having been given for clearness ofunderstanding only.

WVhat I regard as new, and desire to secure by Letters Patent, is

1. In a blow-testing machine, the combination of a suitable indicator,and pneumatic actuating means therefor, including a suitable air-chamberprovided with a vent, a member actuated'through the medium of the air insaid chamber, and a yielding blow-receiving member connected with saidair-chamber, for the purpose set forth.

2. In a blow-testing machine, the combination of a suitable indicator,and pneumatic actuating means therefor comprising a vertically-movablemember, an air-chamber provided with a diaphragm serving to actuate saidmember, and a blow-receiving head connected with said chamber andarranged at substantially right angles to said diaphragm.

3. In a blow-testing machine, the combination of an indicator, a ratchetdevice connected therewith, locking means for holding the pawl of theratchet device disengaged, a pneumatically-actuated diaphragm, meansconnected therewith for actuating the indicator, and means connectedwith the diaphragm for disengaging the pawl-locking means.

4. In ablow-testing machine, the combination of a blow receiving rotarymember equipped with an indicator, a blow-imparting member for strikingsaid rotary member, and pneumatic means for supporting and actuatingsaid blow-imparting member, said blowimparting member seating looselyupon said pneumatic means.

5. In means of the character described, the combination of ayieldingly-held ratchetwheel equipped with an indicator, a pawl servingto engage said ratchet-wheel, a pawl-locking lever, a latch therefor, amember for re leasing said latch, a member for imparting tuatin g meansmotion to said ratchet-wheel, and pneumatic means for actuating saidlast-named two members, for thepurpose set forth.

6. In means of the character described, the combination of a suitableindicator, a reciprocable member serving to actuate the same, a' dog forlocking said member, pneumatic acfor said member, and releasing means,for the purpose set forth.

7. Ina machine of the character described, the combination of aratchet-wheel equipped with an indicator, a vertically-reciprocablestriking member, a dog for locking the same in the elevated position,a'pawl for engaging the ratchet-wheel, a bell-crank one arm for engagingsaid pawl and lever having arm extending parallel with said reciprocablemember, a latch for the last-named arm of said lever, a releasing memberfor said latch, and pneumatic means for simultaneously actuat ing saidlatch-re'leasin g member and saidstrikin g member.

another S. In a machine of the character described, the combination of asuitable indicator, and pneumatic actuating means therefor, including anair-chamber equipped With'a horizontally-disposed diaphragm from Whichthe indicator is actuated and a vertically-disposed flexibleblow-re'ceivin g head, for the purpose set forth. t

-9. In abloW-te ting machine, the combination of a suitable frame, acasing pivotally connected at its upper end with said frame, a springconfined between said frame and the lower portion ceiving'head connectedwith the lower'portion of the casing, an indicator, anindicator-actuating mechanism housed by said casing and actuated fromsaid head, for the purpose set forth. I

- I MORTIMER B. MILLS. In presence of- WALTER N. Wmnnno,

XV. B. DAVIES.

of said casing, a bloW-re- 35

